#include <cmath>
#include <iostream>
using namespace std;

int main() {
  pair<int, int> a, b, c, d;
  a = make_pair<int, int>(1, 2);
  b = make_pair<int, int>(1, 2);
  c = make_pair<int, int>(1, 3);
  d = make_pair<int, int>(2, 2);

  cout << (a == b) << "  " << (a == c) << "  " << (a == d) << endl;

  switch (a) {
  case make_pair<int, int>(1, 3):
    /* code */
    break;
  case make_pair<int, int>(1, 3):
    /* code */
    break;
  case make_pair<int, int>(1, 3):
    /* code */
    break;
  default:
    break;
  }

  return 0;
}